I'm pretty sure I know which unidentified aircraft is shown under the Adventures of Superman entries http://www.impdb.org/index.php?title=Ad ... _TV_Series%
I believe it's a Consolidated C-87 Liberator Express (here's a link to a photo of what looks like could be the very same aircraft).
http://www.edcoatescollection.com/ac3/X ... 20C-87.jpg
